397738520

素因数分解:

$2^3\times 5^1\times {\mathrm{883}}^1\times {\mathrm{11261}}^1$

素因数の和:12155

約数の個数: 32

約数和(自身を含む): 896004720

約数和(自身を除く): 498266200

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 883, 1766, 3532, 4415, 7064, 8830, 11261, 17660, 22522, 35320, 45044, 56305, 90088, 112610, 225220, 450440, 9943463, 19886926, 39773852, 49717315, 79547704, 99434630, 198869260, 397738520]

約数ペア:

[(1, 397738520), (2, 198869260), (4, 99434630), (5, 79547704), (8, 49717315), (10, 39773852), (20, 19886926), (40, 9943463), (883, 450440), (1766, 225220), (3532, 112610), (4415, 90088), (7064, 56305), (8830, 45044), (11261, 35320), (17660, 22522)]